Sector
Education
14,974 domains tracked. 27.0% at DMARC enforcement (p=reject or p=quarantine), backed by 4,042 enforced domains.
Domains tracked
14K+
14,974
DMARC enforcement
27.0%
p=reject + p=quarantine
Avg posture score
40.3
of 100
A-grade domains
71
2 A+ · 69 A
Authentication posture
per protocolDMARC
policy enforcement: 27.0%reject
10.3%quarantine
16.7%none
30.8%missing
42.2%SPF
pass rate: 73.3%pass
73.3%warn
2.1%fail
19.6%not found
5.0%DKIM
pass rate: 51.3%pass
51.3%warn
0.3%fail
42.5%not found
5.9%MTA-STS
pass rate: 0.8%pass
0.8%warn
0.5%fail
88.9%not found
9.8%TLS-RPT
pass rate: 1.8%pass
1.8%warn
14.0%fail
74.4%not found
9.8%BIMI
pass rate: 0.5%pass
0.5%warn
0.2%fail
89.6%not found
9.8%Top performers
20 of 14,974 tracked| # | Domain | Score | Grade |
|---|---|---|---|
| 1 | rmu.edu | 97 | A+ |
| 2 | aber.ac.uk | 95 | A+ |
| 3 | chalkbeat.org | 94 | A |
| 4 | newmanu.edu | 94 | A |
| 5 | bathspa.ac.uk | 93 | A |
| 6 | kaust.edu.sa | 93 | A |
| 7 | usf.edu | 93 | A |
| 8 | aud.edu | 92 | A |
| 9 | chop.edu | 92 | A |
| 10 | derby.ac.uk | 92 | A |
| 11 | hult.edu | 92 | A |
| 12 | italki.com | 92 | A |
| 13 | clarkstate.edu | 91 | A |
| 14 | classdojo.com | 91 | A |
| 15 | nd.edu | 91 | A |
| 16 | usbcali.edu.co | 91 | A |
| 17 | anu.edu.au | 90 | A |
| 18 | auckland.ac.nz | 90 | A |
| 19 | bath.ac.uk | 90 | A |
| 20 | deakin.edu.au | 90 | A |
How this is measured
Each tracked domain is scanned for SPF, DKIM, DMARC, MTA-STS, TLS-RPT, and BIMI. Result statuses (pass / fail / warn / not-found) and DMARC policy values are aggregated into this page nightly. The top performers list is capped at 20. The full corpus is much larger and is not enumerated publicly.
Data provenance
- Scanner — Authex Labs public scanner (DNS, RFC-compliant)
- Refreshed — daily at 04:05 UTC
- Last seen — 8 May 2026